Frost Quakes

Thankfully, frost quakes are not harmful, just a little unsettling as the booms usually happen during the coldest times of the night.

A few nights ago, residents around Ontario woke up to mysterious booms—like an explosion or falling tree. Turns it was just the cold.

Like a glass jar of water in the freezer, the ground can crack as liquid water expands while freezing into ice.

frost-quake
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via Gizmodo – http://gizmodo.com/it-was-so-cold-in-canada-the-ground-exploded-1496252183

Author: coffee dad

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